They still have codes on a regular basis -- stuff-for-stuff members get one with every catalog -- it's just that universal codes are quite rare in the past few years. Most of 'em are for, say, a bonus if you've made a purchase or were at least physically present in a store, and aren't intended to be shared with the whole internet.

it depends whether you visit the Build A Bear Workshop alot. On special occasions, like Christmas or Easter etc, they hand out free leaflets as you pass the bear workshop store. Some Workshops require you to buy something in order to get the code, but I don't think it's necessary